Paragraph 1

United Kingdom

(1)

An appliance shall be classified as A+ or A++ where the energy efficiency index alpha (I) is within the ranges specified in Table 1.

Table 1

Energy efficiency index α(I_α)	“Energy efficiency class”
30 > I_α	A++
42 > I_α ≥ 30	A+
I_α ≥ 42	A to G (see below)

(2)

The energy efficiency index alpha shall be calculated using the formula:

I_{α} = \frac{A C}{S C_{α}} \times 100

where—

“AC” means the annual energy consumption of the appliance (in accordance with the harmonised standards); and
“SC_α” means the standard annual energy consumption α of the appliance.
“SC_α” is calculated as:
MαX∑Compartments(Vc×(25−Tc)20×FF×CC×BI)+Nα+CH
where—
- “Vc” means the net volume (in litres) of the compartment (in accordance with the harmonised standards);
- “Tc” is the design temperature (in °C) of the compartment;
- the values of M and N are given in Table 2; and
- the values of FF, CC, BI and CH are given in Table 3.

Table 2

Type of appliance	Temperature of coldest compartment	M_α	N_α
(1) For these appliances, the temperature and star rating of the compartment with the lowest temperature will determine the values of M and N. Appliances with –18°C (*) compartments shall be considered as fridge-freezers (***).
1. Larder Fridge	>-6°C	0.233	245
2. Refrigerator/chillers	>-6°C	0.233	245
3. Refrigerator no star	>-6°C	0.233	245
4. Refrigerator*	≤-6°C *	0.643	191
5. Refrigerator**	≤-12°C **	0.450	245
6. Refrigerator***/	≤-18°C **/(***)	0.777	303
7. Fridge/freezer (**)	≤-18°C **/(***)	0.777	303
8. Upright freezer	≤-18°C (**)	0.539	315
9. Chest freezer	≤-18°C (**)	0.472	286
10. Multi-door or other appliance		^f1

Table 3

Correction factor	Value	Conditions
(1) An appliance is “built-in” only if it is designed exclusively for installation within a kitchen cavity with a need of furniture finishings, and tested as such.
FF (frost free)	1.2 1	For “frost free” (ventilated) frozen food compartments; Otherwise
CC (climate class)	1.2 1.1 1	For “tropical” appliances; For “subtropical” appliances; Otherwise
BI (built-in)	1.2 1	For built-in appliances ^f2 of under 58cm in width; Otherwise
CH (chill compartment)	50 Kwh/y 0	For appliances with a chill compartment of at least 15 litres; Otherwise

(3)

If an appliance is not A+ or A++, it shall be classified in accordance with Part 2.

Annotations

Footnotes

f1

(1)

For these appliances, the temperature and star rating of the compartment with the lowest temperature will determine the values of M and N. Appliances with –18°C *(***) compartments shall be considered as fridge-freezers *(***).

f2

(1)

An appliance is “built-in” only if it is designed exclusively for installation within a kitchen cavity with a need of furniture finishings, and tested as such.